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Design, Fabrication, and Experimental Evaluation of a 435 MHz Helical Antenna for 433 MHz IoT Modules. J. Elektron. dan Telekomun. [Internet]. 2025 Dec. 31 [cited 2026 Jun. 9];25(2):170-8. Available from: https://jurnalet.brin.go.id/jet/article/view/813